/****************************************************************************
 *
 *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/


import QtQuick              2.5
import QtQuick.Controls     1.2

import QGroundControl.FactSystem    1.0
import QGroundControl.FactControls  1.0
import QGroundControl.Palette       1.0
import QGroundControl.Controls      1.0
import QGroundControl.ScreenTools   1.0

QGCView {
    id:                 _cameraView
    viewPanel:          panel
    anchors.fill:       parent

    FactPanelController { id: controller; factPanel: panel }

    QGCPalette { id: palette; colorGroupEnabled: enabled }

    property Fact _mountRetractX:       controller.getParameterFact(-1, "MNT_RETRACT_X")
    property Fact _mountRetractY:       controller.getParameterFact(-1, "MNT_RETRACT_Y")
    property Fact _mountRetractZ:       controller.getParameterFact(-1, "MNT_RETRACT_Z")

    property Fact _mountNeutralX:       controller.getParameterFact(-1, "MNT_NEUTRAL_X")
    property Fact _mountNeutralY:       controller.getParameterFact(-1, "MNT_NEUTRAL_Y")
    property Fact _mountNeutralZ:       controller.getParameterFact(-1, "MNT_NEUTRAL_Z")

    property Fact _mountRCInTilt:       controller.getParameterFact(-1, "MNT_RC_IN_TILT")
    property Fact _mountStabTilt:       controller.getParameterFact(-1, "MNT_STAB_TILT")
    property Fact _mountAngMinTilt:     controller.getParameterFact(-1, "MNT_ANGMIN_TIL")
    property Fact _mountAngMaxTilt:     controller.getParameterFact(-1, "MNT_ANGMAX_TIL")

    property Fact _mountRCInRoll:       controller.getParameterFact(-1, "MNT_RC_IN_ROLL")
    property Fact _mountStabRoll:       controller.getParameterFact(-1, "MNT_STAB_ROLL")
    property Fact _mountAngMinRoll:     controller.getParameterFact(-1, "MNT_ANGMIN_ROL")
    property Fact _mountAngMaxRoll:     controller.getParameterFact(-1, "MNT_ANGMAX_ROL")

    property Fact _mountRCInPan:        controller.getParameterFact(-1, "MNT_RC_IN_PAN")
    property Fact _mountStabPan:        controller.getParameterFact(-1, "MNT_STAB_PAN")
    property Fact _mountAngMinPan:      controller.getParameterFact(-1, "MNT_ANGMIN_PAN")
    property Fact _mountAngMaxPan:      controller.getParameterFact(-1, "MNT_ANGMAX_PAN")

    property Fact _rc5Function:         controller.getParameterFact(-1, "RC5_FUNCTION")
    property Fact _rc6Function:         controller.getParameterFact(-1, "RC6_FUNCTION")
    property Fact _rc7Function:         controller.getParameterFact(-1, "RC7_FUNCTION")
    property Fact _rc8Function:         controller.getParameterFact(-1, "RC8_FUNCTION")
    property Fact _rc9Function:         controller.getParameterFact(-1, "RC9_FUNCTION")
    property Fact _rc10Function:        controller.getParameterFact(-1, "RC10_FUNCTION")
    property Fact _rc11Function:        controller.getParameterFact(-1, "RC11_FUNCTION")
    property Fact _rc12Function:        controller.getParameterFact(-1, "RC12_FUNCTION")
    property Fact _rc13Function:        controller.getParameterFact(-1, "RC13_FUNCTION")
    property Fact _rc14Function:        controller.getParameterFact(-1, "RC14_FUNCTION")

    property bool _tiltEnabled:         false
    property bool _panEnabled:          false
    property bool _rollEnabled:         false

    // Gimbal Settings not available on older firmware
    property bool _showGimbaLSettings:  controller.parameterExists(-1, "MNT_DEFLT_MODE")

    readonly property real  _margins:                       ScreenTools.defaultFontPixelHeight
    readonly property int   _rcFunctionDisabled:            0
    readonly property int   _rcFunctionMountPan:            6
    readonly property int   _rcFunctionMountTilt:           7
    readonly property int   _rcFunctionMountRoll:           8
    readonly property int   _firstGimbalOutChannel:         5
    readonly property int   _lastGimbalOutChannel:          14
    readonly property int   _mountDefaultModeRCTargetting:  3

    Component.onCompleted: {
        if (_showGimbaLSettings) {
            gimbalSettingsLoader.sourceComponent = gimbalSettings
        }
        calcGimbalOutValues()
    }

    function setGimbalSettingsServoInfo(loader, channel) {
        var rcPrefix = "RC" + channel + "_"

        loader.gimbalOutIndex = channel - 4
        loader.servoPWMMinFact = controller.getParameterFact(-1, rcPrefix + "MIN")
        loader.servoPWMMaxFact = controller.getParameterFact(-1, rcPrefix + "MAX")
        loader.servoReverseFact = controller.getParameterFact(-1, rcPrefix + "REV")
    }

    /// Gimbal output channels are stored in RC#_FUNCTION parameters. We need to loop through those
    /// to find them and setup the ui accordindly.
    function calcGimbalOutValues() {
        gimbalDirectionTiltLoader.gimbalOutIndex = 0
        gimbalDirectionPanLoader.gimbalOutIndex = 0
        gimbalDirectionRollLoader.gimbalOutIndex = 0
        _tiltEnabled = false
        _panEnabled = false
        _rollEnabled = false
        for (var channel=_firstGimbalOutChannel; channel<=_lastGimbalOutChannel; channel++) {
            var functionFact = controller.getParameterFact(-1, "RC" + channel + "_FUNCTION")
            if (functionFact.value == _rcFunctionMountTilt) {
                _tiltEnabled = true
                setGimbalSettingsServoInfo(gimbalDirectionTiltLoader, channel)
            } else if (functionFact.value == _rcFunctionMountPan) {
                _panEnabled = true
                setGimbalSettingsServoInfo(gimbalDirectionPanLoader, channel)
            } else if (functionFact.value == _rcFunctionMountRoll) {
                _rollEnabled = true
                setGimbalSettingsServoInfo(gimbalDirectionRollLoader, channel)
            }
        }
    }

    function setRCFunction(channel, rcFunction) {
        // First clear any previous settings for this function
        for (var index=_firstGimbalOutChannel; index<=_lastGimbalOutChannel; index++) {
            var functionFact = controller.getParameterFact(-1, "RC" + index + "_FUNCTION")
            if (functionFact.value != _rcFunctionDisabled && functionFact.value == rcFunction) {
                functionFact.value = _rcFunctionDisabled
            }
        }

        // Now set the function into the new channel
        if (channel != 0) {
            var functionFact = controller.getParameterFact(-1, "RC" + channel + "_FUNCTION")
            functionFact.value = rcFunction
        }
    }

    // Whenever any RC#_FUNCTION parameters chagnes we need to go looking for gimbal output channels again
    Connections { target: _rc5Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc6Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc7Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc8Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc9Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc10Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc11Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc12Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc13Function; onValueChanged: calcGimbalOutValues() }
    Connections { target: _rc14Function; onValueChanged: calcGimbalOutValues() }

    // Whenever an MNT_RC_IN_* setting is changed make sure to turn on RC targeting
    Connections {
        target:         _mountRCInPan
        onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
    }

    Connections {
        target:         _mountRCInRoll
        onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
    }

    Connections {
        target:         _mountRCInTilt
        onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
    }

    ListModel {
        id: gimbalOutModel
        ListElement { text: qsTr("Disabled"); value: 0 }
        ListElement { text: qsTr("Channel 5"); value: 5 }
        ListElement { text: qsTr("Channel 6"); value: 6 }
        ListElement { text: qsTr("Channel 7"); value: 7 }
        ListElement { text: qsTr("Channel 8"); value: 8 }
        ListElement { text: qsTr("Channel 9"); value: 9 }
        ListElement { text: qsTr("Channel 10"); value: 10 }
        ListElement { text: qsTr("Channel 11"); value: 11 }
        ListElement { text: qsTr("Channel 12"); value: 12 }
        ListElement { text: qsTr("Channel 13"); value: 13 }
        ListElement { text: qsTr("Channel 14"); value: 14 }
    }

    Component {
        id: gimbalDirectionSettings

        // The following properties must be set in the Loader
        //      property string directionTitle
        //      property bool directionEnabled
        //      property int gimbalOutIndex
        //      property Fact mountRcInFact
        //      property Fact mountStabFact
        //      property Fact mountAngMinFact
        //      property Fact mountAngMaxFact
        //      property Fact servoPWMMinFact
        //      property Fact servoPWMMaxFact
        //      property Fact servoReverseFact
        //      property int rcFunction

        Item {
            width:  rectangle.x + rectangle.width
            height: rectangle.y + rectangle.height

            QGCLabel {
                id:         directionLabel
                text:       qsTr("Gimbal ") + directionTitle
                font.family: ScreenTools.demiboldFontFamily
            }

            Rectangle {
                id:                 rectangle
                anchors.topMargin:  _margins / 2
                anchors.left:       parent.left
                anchors.top:        directionLabel.bottom
                width:              mountAngMaxField.x + mountAngMaxField.width + _margins
                height:             servoPWMMaxField.y + servoPWMMaxField.height + _margins
                color:              palette.windowShade

                FactCheckBox {
                    id:                 mountStabCheckBox
                    anchors.topMargin:  _margins
                    anchors.left:       servoReverseCheckBox.left
                    anchors.top:        parent.top
                    text:               qsTr("Stabilize")
                    fact:               mountStabFact
                    checkedValue:       1
                    uncheckedValue:     0
                    enabled:            directionEnabled
                }

                FactCheckBox {
                    id:                 servoReverseCheckBox
                    anchors.margins:    _margins
                    anchors.top:        mountStabCheckBox.bottom
                    anchors.right:       parent.right
                    text:               qsTr("Servo reverse")
                    checkedValue:       1
                    uncheckedValue:     0
                    fact:               servoReverseFact
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 gimbalOutLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   gimbalOutCombo.baseline
                    text:               qsTr("Output channel:")
                }

                QGCComboBox {
                    id:                 gimbalOutCombo
                    anchors.margins:    _margins
                    anchors.top:        parent.top
                    anchors.left:       gimbalOutLabel.right
                    width:              mountAngMinField.width
                    model:              gimbalOutModel
                    currentIndex:       gimbalOutIndex

                    onActivated: setRCFunction(gimbalOutModel.get(index).value, rcFunction)
                }

                QGCLabel {
                    id:                 mountRcInLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   mountRcInCombo.baseline
                    text:               qsTr("Input channel:")
                    enabled:            directionEnabled
                }

                FactComboBox {
                    id:                 mountRcInCombo
                    anchors.topMargin:  _margins / 2
                    anchors.top:        gimbalOutCombo.bottom
                    anchors.left:       gimbalOutCombo.left
                    width:              mountAngMinField.width
                    fact:               mountRcInFact
                    indexModel:         false
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 mountAngLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   mountAngMinField.baseline
                    text:               qsTr("Gimbal angle limits:")
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 mountAngMinLabel
                    anchors.margins:    _margins
                    anchors.left:       mountAngLabel.right
                    anchors.baseline:   mountAngMinField.baseline
                    text:               qsTr("min")
                    enabled:            directionEnabled
                }

                FactTextField {
                    id:                 mountAngMinField
                    anchors.margins:    _margins
                    anchors.top:        mountRcInCombo.bottom
                    anchors.left:       mountAngMinLabel.right
                    fact:               mountAngMinFact
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 mountAngMaxLabel
                    anchors.margins:    _margins
                    anchors.left:       mountAngMinField.right
                    anchors.baseline:   mountAngMinField.baseline
                    text:               qsTr("max")
                    enabled:            directionEnabled
                }

                FactTextField {
                    id:                 mountAngMaxField
                    anchors.leftMargin: _margins
                    anchors.top:        mountAngMinField.top
                    anchors.left:       mountAngMaxLabel.right
                    fact:               mountAngMaxFact
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 servoPWMLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   servoPWMMinField.baseline
                    text:               qsTr("Servo PWM limits:")
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 servoPWMMinLabel
                    anchors.left:       mountAngMinLabel.left
                    anchors.baseline:   servoPWMMinField.baseline
                    text:               qsTr("min")
                    enabled:            directionEnabled
                }

                FactTextField {
                    id:                 servoPWMMinField
                    anchors.topMargin:  _margins / 2
                    anchors.leftMargin: _margins
                    anchors.top:        mountAngMaxField.bottom
                    anchors.left:       servoPWMMinLabel.right
                    fact:               servoPWMMinFact
                    enabled:            directionEnabled
                }

                QGCLabel {
                    id:                 servoPWMMaxLabel
                    anchors.margins:    _margins
                    anchors.left:       servoPWMMinField.right
                    anchors.baseline:   servoPWMMinField.baseline
                    text:               qsTr("max")
                    enabled:            directionEnabled
                }

                FactTextField {
                    id:                 servoPWMMaxField
                    anchors.leftMargin: _margins
                    anchors.top:        servoPWMMinField.top
                    anchors.left:       servoPWMMaxLabel.right
                    fact:               servoPWMMaxFact
                    enabled:            directionEnabled
                }
            } // Rectangle
        } // Item
    } // Component - gimbalDirectionSettings

    Component {
        id: gimbalSettings

        Item {
            width:  rectangle.x + rectangle.width
            height: rectangle.y + rectangle.height

            property Fact _mountDefaultMode:    controller.getParameterFact(-1, "MNT_DEFLT_MODE")
            property Fact _mountType:           controller.getParameterFact(-1, "MNT_TYPE")

            QGCLabel {
                id:             settingsLabel
                text:           qsTr("Gimbal Settings")
                font.family:    ScreenTools.demiboldFontFamily
            }

            Rectangle {
                id:                 rectangle
                anchors.topMargin:  _margins / 2
                anchors.top:        settingsLabel.bottom
                width:              gimbalModeCombo.x + gimbalModeCombo.width + _margins
                height:             gimbalModeCombo.y + gimbalModeCombo.height + _margins
                color:              palette.windowShade

                QGCLabel {
                    id:                 gimbalTypeLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   gimbalTypeCombo.baseline
                    text:               qsTr("Type:")
                }

                FactComboBox {
                    id:                 gimbalTypeCombo
                    anchors.topMargin:  _margins
                    anchors.top:        parent.top
                    anchors.left:       gimbalModeCombo.left
                    width:              gimbalModeCombo.width
                    fact:               _mountType
                    indexModel:         false
                }

                QGCLabel {
                    id:                     rebootLabel
                    anchors.topMargin:      _margins / 2
                    anchors.leftMargin:     _margins
                    anchors.rightMargin:    _margins
                    anchors.left:           parent.left
                    anchors.right:          parent.right
                    anchors.top:            gimbalTypeCombo.bottom
                    wrapMode:               Text.WordWrap
                    text:                   qsTr("Gimbal Type changes takes affect next reboot of autopilot")
                }

                QGCLabel {
                    id:                 gimbalModeLabel
                    anchors.margins:    _margins
                    anchors.left:       parent.left
                    anchors.baseline:   gimbalModeCombo.baseline
                    text:               qsTr("Default Mode:")
                }

                FactComboBox {
                    id:                 gimbalModeCombo
                    anchors.margins:    _margins
                    anchors.top:        rebootLabel.bottom
                    anchors.left:       gimbalModeLabel.right
                    width:              ScreenTools.defaultFontPixelWidth * 15
                    fact:               _mountDefaultMode
                    indexModel:         false
                }
            } // Rectangle
        } // Item
    } // Component - gimbalSettings

    QGCViewPanel {
        id:             panel
        anchors.fill:   parent

        QGCFlickable {
            clip:           true
            anchors.fill:   parent
            contentWidth:   gimbalDirectionTiltLoader.x + gimbalDirectionTiltLoader.width
            contentHeight:  _showGimbaLSettings ? gimbalSettingsLoader.y + gimbalSettingsLoader.height : gimbalDirectionPanLoader.y + gimbalDirectionPanLoader.height

            Loader {
                id:                 gimbalDirectionTiltLoader
                sourceComponent:    gimbalDirectionSettings

                property string directionTitle:     qsTr("Tilt")
                property bool   directionEnabled:   _tiltEnabled
                property int    gimbalOutIndex:     0
                property Fact   mountRcInFact:      _mountRCInTilt
                property Fact   mountStabFact:      _mountStabTilt
                property Fact   mountAngMinFact:    _mountAngMinTilt
                property Fact   mountAngMaxFact:    _mountAngMaxTilt
                property Fact   servoPWMMinFact:    Fact { }
                property Fact   servoPWMMaxFact:    Fact { }
                property Fact   servoReverseFact:   Fact { }
                property int    rcFunction:         _rcFunctionMountTilt
            }

            Loader {
                id:                 gimbalDirectionRollLoader
                anchors.margins:    _margins
                anchors.top:        gimbalDirectionTiltLoader.bottom
                sourceComponent:    gimbalDirectionSettings

                property string directionTitle:     qsTr("Roll")
                property bool   directionEnabled:   _rollEnabled
                property int    gimbalOutIndex:     0
                property Fact   mountRcInFact:      _mountRCInRoll
                property Fact   mountStabFact:      _mountStabRoll
                property Fact   mountAngMinFact:    _mountAngMinRoll
                property Fact   mountAngMaxFact:    _mountAngMaxRoll
                property Fact   servoPWMMinFact:    Fact { }
                property Fact   servoPWMMaxFact:    Fact { }
                property Fact   servoReverseFact:   Fact { }
                property int    rcFunction:         _rcFunctionMountRoll
            }

            Loader {
                id:                 gimbalDirectionPanLoader
                anchors.margins:    _margins
                anchors.top:        gimbalDirectionRollLoader.bottom
                sourceComponent:    gimbalDirectionSettings

                property string directionTitle:     qsTr("Pan")
                property bool   directionEnabled:   _panEnabled
                property int    gimbalOutIndex:     0
                property Fact   mountRcInFact:      _mountRCInPan
                property Fact   mountStabFact:      _mountStabPan
                property Fact   mountAngMinFact:    _mountAngMinPan
                property Fact   mountAngMaxFact:    _mountAngMaxPan
                property Fact   servoPWMMinFact:    Fact { }
                property Fact   servoPWMMaxFact:    Fact { }
                property Fact   servoReverseFact:   Fact { }
                property int    rcFunction:         _rcFunctionMountPan
            }

            Loader {
                id:                 gimbalSettingsLoader
                anchors.margins:    _margins
                anchors.top:        gimbalDirectionPanLoader.bottom
            }
        } // Flickable
    } // QGCViewPanel
} // QGCView
